<description>This filter makes a snapshop of the frame before it draws simple shapes into the alpha channel. Use it together with the mask_apply effect, that uses a transition to composite the current frame's image over the snapshot. The typical use case is to add effects in the following sequence: this effect, zero or more effects, mask_apply.</description>
<description>This filter makes a snapshot of the frame before it draws simple shapes into the alpha channel. Use it together with the mask_apply effect, that uses a transition to composite the current frame's image over the snapshot. The typical use case is to add effects in the following sequence: this effect, zero or more effects, mask_apply.</description>
<description>This filter makes a snapshop of the frame before a keyframable vector based rotoscoping is applied. Use it together with the mask_apply effect, that uses a transition to composite the current frame's image over the snapshot. The typical use case is to add effects in the following sequence: this effect, zero or more effects, mask_apply.</description>
<description>This filter makes a snapshot of the frame before a keyframable vector based rotoscoping is applied. Use it together with the mask_apply effect, that uses a transition to composite the current frame's image over the snapshot. The typical use case is to add effects in the following sequence: this effect, zero or more effects, mask_apply.</description>
<description>This filter makes a snapshop of the frame before an alpha channel (transparency) is created based on another resource. Use it together with the mask_apply effect, that uses a transition to composite the current frame's image over the snapshot. The typical use case is to add effects in the following sequence: this effect, zero or more effects, mask_apply.</description>
<description>This filter makes a snapshot of the frame before an alpha channel (transparency) is created based on another resource. Use it together with the mask_apply effect, that uses a transition to composite the current frame's image over the snapshot. The typical use case is to add effects in the following sequence: this effect, zero or more effects, mask_apply.</description>